Personally I don't bother to wash anything unless its visibly dirty. So, for example, if potatoes are covered in dirt then I'd rinse them. Or if there are likely to be insects in a lettuce I'd rinse it. But really, not otherwise. I don't believe I've washed any ingredients very much for as long as I can remember. I'm sure there may be good reasons to wash some things - but as I've survived 50 years or more unscathed I'm not likely to start now.
How about you?
How about you?